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	var items={"可口可乐":{"classification":"饮料","name":"可口可乐","unit":"瓶","price":"3","count":3,"subtotal":"6元(原价:    9元)","free_count":1,"free_money":3},"雪碧":{"classification":"饮料","name":"雪碧","unit":"瓶","price":"3","count":3,"subtotal":"6元(原价:    9元)","free_count":1,"free_money":3},"苹果":{"classification":"水果","name":"苹果","unit":"斤","price":"5.5","count":3,"subtotal":"16.5元","free_count":1,"free_money":3},"荔枝":{"classification":"水果","name":"荔枝","unit":"斤","price":"2","count":3,"subtotal":"6元","free_count":1,"free_money":3},"电池":{"classification":"生活用品","name":"电池","unit":"个","price":"15","count":2,"subtotal":"30元","free_count":1,"free_money":3},"方便面":{"classification":"食品","name":"方便面","unit":"袋","price":"4.5","count":2,"subtotal":"9元","free_count":1,"free_money":3}}  
     // 获取对象内容
     var aa=_.values(items);
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     // 获取对象名字
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